/* ========== 基础样式 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主色调 - 青绿/蓝绿方案 */
    --primary-color: #0F9CA8;       /* Primary */
    --primary-light: #5DC5CC;       /* Light Primary */
    --primary-dark: #0C7C85;        /* Dark Primary */

    /* 强调与辅助色 */
    --accent-color: #FF6B35;        /* Coral Orange */
    --accent-warm: #FFD166;         /* Lemon Yellow */
    --secondary-color: #3A0CA3;     /* Deep Blue Violet */
    --success-color: #10b981;
    --warning-color: #FFD166;

    /* 背景色 */
    --bg-light: #E6EBEC;            /* Light neutral background */
    --bg-white: #ffffff;
    --bg-gradient: linear-gradient(135deg, #0F9CA8 0%, #5DC5CC 100%);

    /* 文字颜色 */
    --text-dark: #2E3A3D;           /* Deep neutral for main text */
    --text-gray: #7B8B8E;           /* Secondary text/border */
    --text-light: #A9B6B8;

    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.15);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.2);
    
    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    /* 动画 */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    min-height: 100vh;              /* 使页面最小高度为视窗高度 */
    display: flex;                  /* 构建粘底布局 */
    flex-direction: column;
}

.container {
    /* 扩大容器宽度，减少两侧留白；同时对超宽屏做视口限制 */
    max-width: min(1400px, 94vw);
    margin: 0 auto;
    padding: 0 20px;
}

/* ========== 导航栏 ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background-color: var(--primary-dark);
    backdrop-filter: blur(10px);
}

.nav-wrapper {
    display: flex;
    justify-content: flex-start;   /* 靠左对齐让菜单贴近 Logo */
    align-items: center;
    gap: 2rem;                    /* 控制 Logo 与菜单间距 */
    padding: 1rem 0;
}

.logo img {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.75rem;                 /* 收紧菜单项间距 */
    margin-left: 0.5rem;          /* 让菜单更靠近 Logo */
}

.nav-link {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.15rem;           /* 再提升字号 */
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
}

.nav-link:hover,
.nav-link.active {
    background-color: var(--primary-light);
    color: #fff;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: #fff;
    margin: 3px 0;
    transition: var(--transition);
    border-radius: 3px;
}

/* ========== 主视觉区域 ========== */
/* ========== 顶部宣传区（静态） ========== */
.hero-static { position: relative; background: var(--bg-gradient); color:#fff; margin-top: 70px; min-height: clamp(420px, 62vh, 680px); display: flex; align-items: center; padding: 48px 0; }
.hero-static-content { text-align: center; max-width: 980px; margin: 0 auto; }
.hero-title-large { font-size: 3rem; font-weight: 800; letter-spacing: 1px; margin-bottom: .5rem; text-shadow: 0 4px 16px rgba(0,0,0,.15); }
.hero-sub { font-size: 1.3rem; opacity: .95; margin-bottom: 1.2rem; }
.hero-desc { font-size: 1.05rem; line-height: 1.9; opacity: .95; margin: 0 auto 1.2rem; }
.hero-points { list-style: none; padding:0; margin: 0 auto 1.5rem; display: grid; grid-template-columns: repeat(2, minmax(220px,1fr)); gap: .5rem 1.25rem; max-width: 900px; }
.hero-points li { text-align: left; }
.hero-points i { margin-right: .5rem; }
.cta-group { display: flex; justify-content: center; gap: 12px; margin-top: .5rem; }
.btn-ghost { border: 2px solid #fff; color: #fff; background: transparent; padding: .75rem 1.5rem; border-radius: var(--radius-sm); transition: var(--transition); }
.btn-ghost:hover { background: #fff; color: var(--primary-dark); }

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(15, 156, 168, 0.35);
}

/* ========== 智能诊疗仪器栏目 ========== */
.devices-section {
    padding: 5rem 0;
    background-color: var(--bg-white);
}
.products-section { padding: 3rem 0; background: #fff; }
.products-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.25rem; }
.product-card { background: #fff; border: 1px solid var(--bg-light); border-radius: var(--radius-lg); padding: 1.25rem; transition: var(--transition); box-shadow: var(--shadow-sm); display:flex; flex-direction:column; }
.product-card:hover { transform: translateY(-6px); border-color: var(--primary-color); box-shadow: var(--shadow-md); }
.product-icon { color: var(--primary-color); width: 64px; height: 64px; margin-bottom: .75rem; }
.product-icon svg { width: 100%; height: 100%; }
.product-card h3 { font-size: 1.1rem; color: var(--text-dark); margin-bottom: .5rem; }
.product-card p { color: var(--text-gray); flex: 1; }
.product-actions { margin-top: 1rem; }
.btn-outline { border: 2px solid var(--primary-color); color: var(--primary-color); background: transparent; padding: .6rem 1.2rem; border-radius: var(--radius-sm); transition: var(--transition); display:inline-block; }
.btn-outline:hover { background: var(--primary-color); color: #fff; }

/* ========== 新 技术优势 ========== */
.tech-advantages { padding: 3.25rem 0; background: var(--bg-light); }
.adv-grid { display: grid; grid-template-columns: repeat(5,1fr); gap: 1rem; }
.adv-card { background:#fff; border-radius: var(--radius-lg); padding: 1.25rem; box-shadow: var(--shadow-sm); border:1px solid var(--bg-light); transition: var(--transition); }
.adv-card:hover { border-color: var(--primary-color); transform: translateY(-4px); }
.adv-card h4 { color: var(--primary-dark); margin-bottom: .5rem; }

/* ========== 服务客户 & 合作伙伴 ========== */
.clients-section { padding:4rem 0; background:#fff; }
.clients-grid { display:grid; grid-template-columns: repeat(4,1fr); gap: 1rem; }
.client-card { background:#fff; border:1px solid var(--bg-light); padding:1rem; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.client-card h5 { color: var(--primary-dark); margin-bottom:.25rem; }

.partners-section { padding:4rem 0; background: var(--bg-light); }
.partners-grid { display:grid; grid-template-columns: repeat(5,1fr); gap: 1rem; }
.partner { background:#fff; border:1px dashed var(--text-gray); border-radius: var(--radius-md); padding:1.2rem; text-align:center; color: var(--text-gray); }

.section-header {
    text-align: center;
    margin-bottom: 2rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-gray);
}

.device-showcase {
    display: flex;
    justify-content: center;
}

.device-card {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 3rem;
    display: flex;
    gap: 3rem;
    align-items: center;
    transition: var(--transition);
}

.device-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.device-images {
    flex: 1;
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.device-img {
    max-width: 300px;
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.device-img:hover {
    transform: scale(1.05);
}

.device-info {
    flex: 1;
}

.device-name {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.device-desc {
    font-size: 1.1rem;
    color: var(--text-gray);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.device-features {
    list-style: none;
}

.device-features li {
    padding: 0.75rem 0;
    font-size: 1.05rem;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.device-features i {
    color: var(--success-color);
    font-size: 1.2rem;
}

/* ========== 产品介绍区域 ========== */
.product-intro {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.intro-wrapper {
    display: flex;
    gap: 4rem;
    align-items: center;
}

.intro-image {
    flex: 1;
}

.intro-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.intro-content {
    flex: 1;
}

.intro-text p {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--text-gray);
    margin-bottom: 1.5rem;
}

.intro-text strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* ========== 核心优势展示 ========== */
.advantages {
    padding: 4rem 0;
    background-color: var(--bg-white);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.advantage-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 2px solid transparent;
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--bg-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: #fff;
}

.advantage-card h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.advantage-card p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* ========== 华智云翳大模型展示 ========== */
.ai-model {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--bg-light) 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.ai-model-wrapper {
    display: flex;
    align-items: center;
    gap: 4rem;
    position: relative;
    z-index: 1;
}

.ai-model-content {
    flex: 1;
}

.ai-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background-color: var(--accent-color);
    color: #fff;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.ai-model-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.ai-model-desc {
    font-size: 1.2rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.ai-features {
    list-style: none;
}

.ai-features li {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
    font-size: 1.1rem;
    color: var(--text-dark);
}

.ai-features i {
    color: var(--success-color);
    font-size: 1.5rem;
}

.ai-model-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.ai-circle {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: var(--bg-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 120px;
    color: #fff;
    box-shadow: 0 20px 60px rgba(15, 156, 168, 0.35);
    animation: pulse 3s ease-in-out infinite;
}

.ai-particles span {
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--accent-color);
    border-radius: 50%;
    opacity: 0.6;
    animation: float 4s ease-in-out infinite;
}

.ai-particles span:nth-child(1) {
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.ai-particles span:nth-child(2) {
    top: 70%;
    left: 30%;
    animation-delay: 1s;
}

.ai-particles span:nth-child(3) {
    top: 30%;
    right: 20%;
    animation-delay: 2s;
}

.ai-particles span:nth-child(4) {
    bottom: 20%;
    right: 30%;
    animation-delay: 3s;
}

/* ========== 功能模块详细说明 ========== */
.features {
    padding: 4rem 0;
    background-color: var(--bg-white);
}

.features-accordion {
    max-width: 900px;
    margin: 0 auto;
}

.accordion-item {
    background: #fff;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    border: 2px solid transparent;
    transition: var(--transition);
}

.accordion-item:hover {
    border-color: var(--accent-color);
}

.accordion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    cursor: pointer;
    background-color: var(--bg-light);
    transition: var(--transition);
}

.accordion-header:hover {
    background-color: #e0f2fe;
}

.accordion-header h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
}

.accordion-header i {
    font-size: 1.2rem;
    color: var(--text-gray);
    transition: var(--transition);
}

.accordion-item.active .accordion-header i {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.accordion-item.active .accordion-content {
    max-height: 1000px;
}

.accordion-content ul {
    padding: 1.5rem 2rem 2rem;
    list-style: none;
}

.accordion-content li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--text-gray);
    line-height: 1.8;
}

.accordion-content li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-size: 1.5rem;
}

/* ========== 应用场景展示 ========== */
.scenarios {
    padding: 4rem 0;
    background: var(--bg-light);
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.scenario-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 2.5rem 1.5rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.scenario-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.scenario-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-light) 0%, #eaf6f7 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--primary-dark);
}

.scenario-card h3 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.scenario-card p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* ========== 页脚区域 ========== */
.footer {
    background-color: var(--primary-dark);
    color: #fff;
    padding: 3rem 0 1.5rem;
}

/* 让页脚粘在底部，当内容不足时占满高度 */
.footer { margin-top: auto; }

/* 主内容区域在粘底布局中自动撑开剩余空间 */
main { flex: 1; }

.footer-content {
    display: flex;
    gap: 4rem;
    margin-bottom: 2rem;
}

.footer-logo img {
    height: 40px;
    margin-bottom: 1rem;
}

.footer-about {
    flex: 1;
}

.footer-about h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-light);
}

.footer-about p {
    color: var(--primary-light);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: var(--text-light);
}

/* ========== 通用页面头部（多页面） ========== */
.page-hero {
    margin-top: 70px;
    background: var(--bg-gradient);
    color: #fff;
    padding: 60px 0;
    text-align: center;
}

.page-hero h1 { font-size: 2.2rem; font-weight: 700; margin-bottom: 10px; }
.page-hero p { color: #e0f2fe; }

.page-content { padding: 2rem 0 3rem; }

.cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.25rem; }

/* ========== 产品页：两栏布局 ========== */
.product-layout { display: grid; grid-template-columns: 280px 1fr; gap: 2rem; }
.product-sidebar { position: sticky; top: 90px; align-self: start; background: #fff; border: 1px solid var(--bg-light); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.sidebar-title { font-size: 1rem; padding: .9rem 1.1rem; color: var(--primary-dark); border-bottom: 1px solid var(--bg-light); }
.product-menu { list-style: none; padding: .5rem 0; }
.product-menu li a { display: block; padding: .8rem 1.1rem; color: var(--text-dark); text-decoration: none; border-left: 3px solid transparent; transition: var(--transition); }
.product-menu li a:hover { background: var(--bg-light); border-left-color: var(--primary-light); }
.product-menu li a.active { background: #fff; border-left-color: var(--primary-color); color: var(--primary-dark); }

.product-detail { display: block; }
.product-section { display:none; background: #fff; border: 1px solid var(--bg-light); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: 1.5rem; margin-bottom: 1.25rem; scroll-margin-top: 90px; }
.product-section.active { display:block; }
.product-section h2 { color: var(--primary-color); margin-bottom: .5rem; }
.feature-list { margin-top: .5rem; padding-left: 1.1rem; }
.feature-list li { color: var(--text-gray); line-height: 1.8; list-style: disc; }

/* 详情页头部布局 */
.product-hero { display:flex; gap:2rem; align-items:center; }
.product-hero-text { flex:1; }
.product-hero-sub { color: var(--accent-color); font-weight:600; margin:.25rem 0 1rem; }
.product-figure { flex:1; text-align:center; }
.product-figure img { max-width: 480px; width: 100%; height: auto; border-radius: var(--radius-md); box-shadow: var(--shadow-md); }

/* 数字要点 */
.product-stats { display:flex; gap:1rem; margin: 1rem 0; }
.stat-badge { width:64px; height:64px; border-radius:16px; display:flex; flex-direction:column; align-items:center; justify-content:center; color:#fff; box-shadow: var(--shadow-sm); }
.stat-3 { background: linear-gradient(135deg, #ff9a3d, #ff6b35); }
.stat-6 { background: linear-gradient(135deg, var(--primary-color), var(--primary-dark)); }
.stat-28 { background: linear-gradient(135deg, #1fb6ff, #0096c7); }
.stat-badge small { opacity:.9; font-size:.75rem; }

/* 详情子块 */
.product-block { margin-top: 1.25rem; }
.product-block h3 { color: var(--primary-dark); margin-bottom: .5rem; }

/* 功能图标占位的网格 */
.feature-grid { display:grid; grid-template-columns: repeat(4,1fr); gap: .75rem; margin-top:.5rem; }
.feature-item { display:flex; align-items:center; gap:.5rem; padding:.75rem; background:#fff; border:1px solid var(--bg-light); border-radius: var(--radius-md); }
.feature-item i { color: var(--primary-color); }

/* 寸关尺徽章 */
.cgc-badges { display:flex; gap:1rem; margin:.5rem 0 1rem; }
.cgc-badge { width:70px; height:70px; border-radius:50%; border:3px solid var(--primary-color); display:flex; align-items:center; justify-content:center; font-weight:700; font-size:22px; color: var(--primary-color); background:#fff; box-shadow: var(--shadow-sm); }

/* 版本卡片 */
.version-grid { display:grid; grid-template-columns: repeat(2,1fr); gap:1rem; margin-top:.5rem; }
.version-card { background:#fff; border:1px solid var(--bg-light); border-radius: var(--radius-md); padding:1rem; box-shadow: var(--shadow-sm); }
.version-title { margin-top:.5rem; font-weight:600; text-align:center; color: var(--text-dark); }

/* 占位图样式（用于后续替换为文生图） */
.img-placeholder { width:100%; aspect-ratio: 16/9; border:2px dashed var(--text-gray); border-radius: var(--radius-md); color: var(--text-gray); display:flex; align-items:center; justify-content:center; background: repeating-linear-gradient(45deg, #fafafa 0, #fafafa 10px, #ffffff 10px, #ffffff 20px); font-size:.9rem; text-align:center; padding:1rem; }
.img-placeholder.small { aspect-ratio: 1/1; }
.img-placeholder.tall { aspect-ratio: 3/4; }

/* 双图对比区域 */
.double-figure { display:grid; grid-template-columns: repeat(2,1fr); gap:1rem; }

/* 数据规模展示 */
.data-stats { display:grid; grid-template-columns: repeat(4,1fr); gap:1.5rem; margin:1rem 0; }
.data-item { text-align:center; }
.data-number { font-size:2.5rem; font-weight:800; color: var(--accent-color); line-height:1.2; }
.data-number span { font-size:1.2rem; font-weight:600; }
.data-label { color: var(--text-gray); margin-top:.25rem; font-size:.9rem; }

/* 场景列表 */
.scene-list { display:flex; flex-direction:column; gap:.75rem; }
.scene-item { display:flex; gap:.75rem; align-items:flex-start; padding:.75rem; background:#fff; border:1px solid var(--bg-light); border-radius: var(--radius-md); }
.scene-badge { background: var(--accent-color); color:#fff; padding:.4rem .9rem; border-radius:20px; font-weight:600; font-size:.9rem; white-space:nowrap; }
.scene-desc { color: var(--text-gray); line-height:1.7; flex:1; }

/* 产品优势列表 */
.advantage-list { display:flex; flex-direction:column; gap:.9rem; }
.adv-item { display:flex; gap:1rem; align-items:flex-start; padding:1rem; background:#fff; border:1px solid var(--bg-light); border-radius: var(--radius-md); transition: var(--transition); }
.adv-item:hover { border-color: var(--primary-color); box-shadow: var(--shadow-md); }
.adv-item i { font-size:2rem; color: var(--primary-color); min-width:40px; }
.adv-content { flex:1; }
.adv-content h4 { color: var(--primary-dark); margin-bottom:.25rem; }
.adv-content p { color: var(--text-gray); line-height:1.7; }

/* 详情扩展段落 */
.sub-section { margin-top: 1.25rem; }
.sub-section h3 { font-size: 1.1rem; color: var(--primary-dark); margin-bottom: .5rem; }
.icon-grid { display:grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; }
.icon-grid li { list-style:none; background:#fff; border:1px solid var(--bg-light); border-radius: var(--radius-md); padding:.75rem .9rem; display:flex; gap:.5rem; align-items:flex-start; box-shadow: var(--shadow-sm); }
.icon-grid i { color: var(--success-color); margin-top: .2rem; }
.img-row { display:flex; gap:1rem; flex-wrap: wrap; }
.img-row img { background:#fff; border:1px dashed var(--text-light); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.placeholder-caption { font-size:.9rem; color: var(--text-gray); margin-top:.25rem; }


.card {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 1.5rem;
    transition: var(--transition);
}

.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.card h3 { color: var(--primary-color); margin-bottom: .5rem; }
.card p { color: var(--text-gray); line-height: 1.8; }

/* ========== 动画 ========== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .slide-caption h2 { font-size: 1.8rem; }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .products-grid { grid-template-columns: repeat(2,1fr); }
    .adv-grid { grid-template-columns: repeat(3,1fr); }
    .clients-grid { grid-template-columns: repeat(2,1fr); }
    .partners-grid { grid-template-columns: repeat(3,1fr); }
    .product-layout { grid-template-columns: 1fr; }
    .product-sidebar { position: static; }
    .product-figure img { max-width: 360px; }
    .product-hero { flex-direction: column; align-items: flex-start; }
    .feature-grid { grid-template-columns: repeat(2,1fr); }
    .double-figure { grid-template-columns: 1fr; }
    .version-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    /* 导航栏 */
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--primary-color);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
        margin-left: 0;          /* 移动端不需要左距 */
    }
    .nav-link { font-size: 1.05rem; }   /* 移动端略收紧避免换行 */
    
    .nav-menu.active {
        left: 0;
    }
    
    /* 主视觉 */
    .hero-static { min-height: 52vh; padding: 36px 0; }
    .banner { height: 46vh; }
    
    /* 设备展示 */
    .device-card {
        flex-direction: column;
        padding: 2rem;
    }
    
    /* 产品介绍 */
    .intro-wrapper {
        flex-direction: column;
        gap: 2rem;
    }
    
    /* 优势 */
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    /* AI大模型 */
    .ai-model-wrapper {
        flex-direction: column;
        gap: 2rem;
    }
    
    .ai-model-title {
        font-size: 2rem;
    }
    
    .ai-circle {
        width: 200px;
        height: 200px;
        font-size: 80px;
    }
    
    /* 场景 */
    .scenarios-grid {
        grid-template-columns: 1fr;
    }
    
    /* 页脚 */
    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }
    .products-grid { grid-template-columns: 1fr; }
    .adv-grid { grid-template-columns: 1fr; }
    .clients-grid { grid-template-columns: 1fr; }
    .partners-grid { grid-template-columns: 2,1fr; }
}

/* ========== 产品总览页样式 ========== */
.products-overview {
    padding: 2rem 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.product-card {
    background: white;
    border-radius: var(--radius-md);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    border-top: 4px solid var(--primary-color);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-top-color: var(--accent-color);
}

.product-card-icon {
    width: 100%;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.product-card-icon img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.product-card h3 {
    color: var(--text-dark);
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.product-card-subtitle {
    color: var(--primary-color);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--bg-light);
}

.product-card-desc {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.product-card-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.highlight-tag {
    background: var(--bg-light);
    color: var(--text-dark);
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.highlight-tag i {
    color: var(--success-color);
    font-size: 0.75rem;
}

.product-card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    align-self: flex-start;
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-sm);
}

.product-card-link:hover {
    background: var(--primary-color);
    color: white;
    gap: 0.75rem;
}

.product-card-link i {
    transition: var(--transition);
}

.product-card-link:hover i {
    transform: translateX(5px);
}

/* ========== 产品详情页样式 ========== */
.breadcrumb {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.breadcrumb a {
    color: var(--bg-white);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--accent-warm);
}

.product-detail-page {
    margin-top: 2rem;
}

.product-detail-page .lead {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-gray);
    margin-bottom: 1.5rem;
}

/* 技术架构 */
.tech-stack,
.tech-principle,
.model-architecture {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.tech-layer,
.arch-section,
.principle-section,
.module-section {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
}

.tech-layer h4,
.arch-section h4,
.principle-section h4,
.module-section h4 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.tech-layer p,
.arch-section p,
.principle-section p {
    color: var(--text-gray);
    line-height: 1.7;
}

.module-section ul {
    margin-top: 0.5rem;
}

/* 流程步骤 */
.workflow-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.workflow-step {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.workflow-step:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--bg-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.workflow-step h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.workflow-step p {
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.5;
}

/* 目标受众卡片 */
.target-audience {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.audience-card {
    padding: 2rem;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition);
}

.audience-card:hover {
    background: white;
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.audience-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.audience-card h4 {
    color: var(--text-dark);
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.audience-card p {
    color: var(--text-gray);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* 价值卡片 */
.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.value-card {
    padding: 2rem;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border-top: 4px solid var(--primary-color);
    transition: var(--transition);
}

.value-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.value-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: block;
}

.value-card h4 {
    color: var(--text-dark);
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.value-card p {
    color: var(--text-gray);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* 案例展示 */
.case-examples {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 1.5rem;
}

.case-card {
    padding: 2rem;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-color);
}

.case-card h4 {
    color: var(--primary-dark);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.case-card p {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 0.75rem;
}

.case-card p strong {
    color: var(--text-dark);
    font-weight: 600;
}

/* CTA区块 */
.cta-block {
    background: var(--bg-gradient);
    color: white;
    padding: 3rem 2rem;
    border-radius: var(--radius-md);
    text-align: center;
    margin-top: 3rem;
}

.cta-block h3 {
    color: white;
    margin-bottom: 1rem;
}

.cta-block p {
    color: rgba(255,255,255,0.9);
    margin-bottom: 2rem;
    font-size: 1.05rem;
}

.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    margin: 0 0.5rem;
}

.btn-primary {
    background: white;
    color: var(--primary-color);
}

.btn-primary:hover {
    background: var(--accent-warm);
    color: var(--text-dark);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: var(--primary-color);
}

/* 表格样式 */
.specs-table,
.api-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1.5rem;
    background: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.specs-table th,
.specs-table td,
.api-table th,
.api-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--bg-light);
}

.specs-table th,
.api-table th {
    background: var(--primary-color);
    color: white;
    font-weight: 600;
}

.specs-table tr:hover,
.api-table tbody tr:hover {
    background: var(--bg-light);
}

.api-table code {
    background: var(--bg-light);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    color: var(--primary-dark);
}

/* 设备工作流程 */
.device-workflow {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: var(--radius-md);
    margin-top: 1.5rem;
}

.device-intro {
    margin-bottom: 2rem;
}

.device-intro h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.device-intro ul {
    list-style: none;
}

.device-intro ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.device-intro ul li:before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* 知识图谱能力 */
.knowledge-features,
.ai-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.kg-feature,
.ai-algorithm,
.pulse-library {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.kg-feature h4,
.ai-algorithm h4,
.pulse-library h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.kg-feature h4 i,
.ai-algorithm h4 i,
.pulse-library h4 i {
    font-size: 1.5rem;
}

/* 场景应用 */
.scenario-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.scenario-card {
    padding: 2rem;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition);
}

.scenario-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.scenario-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.scenario-card h4 {
    color: var(--text-dark);
    margin-bottom: 0.75rem;
}

.scenario-card p {
    color: var(--text-gray);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* 多模态部分 */
.multimodal-section {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

.multimodal-section h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.multimodal-section h4 i {
    font-size: 1.5rem;
}

.multimodal-section p {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 0.5rem;
}

.multimodal-section p strong {
    color: var(--text-dark);
}

/* 脉象相关 */
.cgc-section {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: var(--radius-md);
    margin-top: 1.5rem;
}

.cgc-badges {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.cgc-badge {
    width: 80px;
    height: 80px;
    background: var(--bg-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: bold;
    box-shadow: var(--shadow-md);
}

.tech-details {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    margin-top: 1rem;
}

.tech-details h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* 脉象类型 */
.pulse-types {
    margin-top: 1.5rem;
}

.pulse-category {
    margin-bottom: 2rem;
}

.pulse-category h4 {
    color: var(--primary-dark);
    margin-bottom: 1rem;
}

.pulse-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.pulse-tag {
    background: var(--bg-light);
    color: var(--text-dark);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    transition: var(--transition);
}

.pulse-tag:hover {
    background: var(--primary-color);
    color: white;
}

/* 版本对比 */
.version-comparison {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 1.5rem;
}

.version-card {
    background: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.version-card.featured {
    border: 3px solid var(--primary-color);
}

.version-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.version-header {
    background: var(--bg-gradient);
    color: white;
    padding: 1.5rem;
    text-align: center;
}

.version-header h4 {
    color: white;
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.version-badge {
    background: rgba(255,255,255,0.2);
    padding: 0.3rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    display: inline-block;
}

.version-features {
    padding: 2rem;
    list-style: none;
}

.version-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--bg-light);
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.version-features li:last-child {
    border-bottom: none;
}

.version-features li i {
    color: var(--success-color);
    margin-top: 0.2rem;
}

.version-spec {
    background: var(--bg-light);
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-top: 1rem;
    font-style: italic;
    color: var(--text-gray);
}

/* 响应式 - 产品总览页与详情页 */
@media (max-width: 768px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .workflow-steps {
        grid-template-columns: 1fr;
    }
    
    .target-audience,
    .value-grid,
    .scenario-grid {
        grid-template-columns: 1fr;
    }
    
    .case-examples {
        grid-template-columns: 1fr;
    }
    
    .version-comparison {
        grid-template-columns: 1fr;
    }
    
    .cgc-badges {
        gap: 1rem;
    }
    
    .cgc-badge {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .btn-primary,
    .btn-secondary {
        display: block;
        margin: 0.5rem 0;
    }
}

